CN105057676A - Metal fiber porous material with surface reticular sintering film structure and manufacturing method - Google Patents
Metal fiber porous material with surface reticular sintering film structure and manufacturing method Download PDFInfo
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- CN105057676A CN105057676A CN201510492780.0A CN201510492780A CN105057676A CN 105057676 A CN105057676 A CN 105057676A CN 201510492780 A CN201510492780 A CN 201510492780A CN 105057676 A CN105057676 A CN 105057676A
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Abstract
The invention discloses a metal fiber porous material with a surface reticular sintering film structure and a manufacturing method. The metal fiber porous material comprises a material body, widely-communicated holes are formed in the material body, and surface reticular films are formed on the surfaces of the material body through laser scanning. The manufacturing method comprises the following steps that S10, a metal fiber is manufactured; S20, the metal fiber is placed in a cavity of a mold, and the metal fiber in the cavity is squeezed to obtain the material body; S30, an upper cover plate is opened, the upper surface of the material body in the cavity is scanned with lasers, and the upper surface is sintered to form the corresponding surface reticular film; and S40, a lower cover plate of the mold is opened, the lower surface of the material body in the cavity is scanned with lasers, and the lower surface is sintered to form the corresponding surface reticular film. Through the surface reticular film structure, the function of wrapping the inner material body is achieved, and sheet resonance sound absorption can be generated. Due to the material body with the widely-communicated holes inside and the surface film structure, the Helmholtz resonance sound absorption principle is achieved, and therefore the sound absorption effect of the material is greatly enhanced.
Description
Technical field
The present invention is used for mushy material manufacturing technology field, particularly relates to a kind of metal fiber polyporous material and the manufacture method with surface mesh sintering structure of film.
Background technology
Large to auto industry manufacture at present, little of home improvement, increasing to the demand of sound-absorbing material, as everyone knows, the necessary condition of sound-absorbing material is: material has a large amount of holes, hole directly interconnects, hole gos deep into material internal, and sound wave can go deep into material internal along these holes, with material generation rubbing action, acoustic energy is converted into heat energy.Textile porous materials is a kind of well attractive material.Present stage is often through solid phase atmosphere Oven Sintered Technology or the compressing porous material preparing attraction of mould, although it considers the thickness of porosity and material, but integral sintered and overall compacting can not ensure that material internal has the hole be extensively communicated with, attract effect naturally can be affected.And not material can not accomplished to absorb sound principle in conjunction with thin plate sound absorption principle and helmholtz resonance.
Summary of the invention
For solving the problem, the invention provides a kind of metal fiber polyporous material and the manufacture method with surface mesh sintering structure of film.
The technical solution adopted for the present invention to solve the technical problems is: the metal fiber polyporous material with surface mesh sintering structure of film, comprise material body, described material body inside has the hole be extensively communicated with, and the surface of material body forms surface mesh overlay film by laser scanning.
Be further used as the improvement of technical solution of the present invention, described material body is extruded by mould after adopting metallic fiber to load the die cavity of mould.
Be further used as the improvement of technical solution of the present invention, the retention mechanism that described mould comprises profiled sheeting, be positioned at the upper cover plate of described profiled sheeting both sides and lower cover and described upper cover plate and lower cover can be clamped to profiled sheeting, described profiled sheeting is provided with forming through hole, form described die cavity between the inherent described upper cover plate of described forming through hole and lower cover, described upper cover plate and/or lower cover are provided with the Forming press that can embed in described forming through hole.
Be further used as the improvement of technical solution of the present invention, described retention mechanism comprise some be distributed in forming through hole surrounding and nut is equipped with successively through the screw rod of upper cover plate, profiled sheeting and lower cover, each described screw rod in the outside of lower cover.
Be further used as the improvement of technical solution of the present invention, the diameter of described metallic fiber is 100 ~ 300 μm, and the porosity of described material body is 0.6 ~ 0.98.
There is the manufacture method of the metal fiber polyporous material of surface mesh sintering structure of film, comprise the following steps:
S10. metallic fiber is made;
S20. metallic fiber is inserted the die cavity of mould, fastening screw, make the metallic fiber in the Forming press extruding die cavity in insert molding through hole, obtain the inner material body with the hole be extensively communicated with;
S30. unclamp screw rod, open the upper cover plate of mould, adopt the upper surface of material body in laser scanning die cavity, form with the upper surface sintering in material body the surface mesh overlay film pinning interior metal fiber;
S40. after the upper surface of material body has scanned, mould is inverted and comes, open the lower cover of mould, adopt the lower surface of material body in laser scanning die cavity, form with the lower surface sintering in material body the surface mesh overlay film pinning interior metal fiber.
Be further used as the improvement of technical solution of the present invention, in step S10, metallic fiber is obtained by turning by stainless steel bars, and the diameter of metallic fiber is 100 ~ 300 μm.
Be further used as the improvement of technical solution of the present invention, the upper surface of material body and lower surface duration scanning are 1 ~ 3 minute.
Beneficial effect of the present invention: rapid laser-shaping technique is applied in the manufacture craft of metal fiber polyporous material by the present invention, from material manufacture view, the metal fiber polyporous material with surface mesh structure of film of this fabrication techniques specific pore rate is out utilized to have the features such as residual stress is little, shaping efficiency is high, easy and simple to handle.From the viewpoint of material property, fine and close surface mesh overlay film is wrapped in the material body that inside has extensive interconnected pore, has both had the structural property of porous, and has also had certain intensity and toughness, and met specific mechanical property requirements.From the function aspects as attractive material, surface mesh structure of film had both played the effect of parcel internal material body, thin plate resonance sound-absorbing can be produced again and the material body that inside has an extensive interconnected pore has helmholtz resonance together with surface coating structure absorbs sound principle, thus greatly strengthen the sound-absorbing effect of material.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the invention will be further described:
Fig. 1 is upper cover plate schematic diagram of the present invention;
Fig. 2 is profiled sheeting schematic diagram of the present invention;
Fig. 3 is lower cover schematic diagram of the present invention;
Fig. 4 is lower cover of the present invention and the rear schematic diagram of profiled sheeting combination;
Fig. 5 is mold integral structural representation of the present invention;
Fig. 6 is material body schematic diagram of the present invention.
Detailed description of the invention
Referring to figs. 1 through Fig. 6, that show the concrete structure of the preferred embodiment of the present invention.To the design feature of the present invention each element be described in detail below, and if be described to direction (upper and lower, left and right, before and after) time, be with the structure shown in Fig. 5 for reference to describing, but actual user of the present invention is to being not limited thereto.
With reference to Fig. 6, the invention provides the metal fiber polyporous material with surface mesh sintering structure of film, comprise material body 1, the overall rectangular 70mm × 80mm of material body 1 in the present embodiment, thickness 2mm, described material body 1 inside has the hole be extensively communicated with, and the surface of material body 1 forms surface mesh overlay film 2 by laser scanning.Described material body 1 is extruded by mould after adopting metallic fiber to load the die cavity of mould.The diameter of described metallic fiber is 100 ~ 300 μm, and the porosity of described material body 1 is 0.6 ~ 0.98.See Fig. 1 to Fig. 5, the retention mechanism that described mould comprises profiled sheeting 31, be positioned at the upper cover plate 32 of described profiled sheeting 31 both sides and lower cover 33 and described upper cover plate 32 and lower cover 33 can be clamped to profiled sheeting 31, described profiled sheeting 31 is provided with forming through hole 34, form die cavity 35 between the inherent described upper cover plate 32 of described forming through hole 34 and lower cover 33, described upper cover plate 32 and/or lower cover 33 are provided with the Forming press 36 that can embed in described forming through hole 34.Described retention mechanism comprise some be distributed in forming through hole 34 surrounding and successively through the screw rod 37 of upper cover plate 32, profiled sheeting 31 and lower cover 33, each described screw rod 37 is equipped with nut 38 in the outside of lower cover 33, forming through hole 34 and die cavity 35 can be set to different cross section shape and size according to its concrete application demand, thus in order to manufacture the material of difformity and thickness.
The above-mentioned manufacture method with the metal fiber polyporous material of surface mesh sintering structure of film, comprises the following steps:
S10. make metallic fiber, metallic fiber is obtained by turning by stainless steel bars, and the diameter of metallic fiber is 100 ~ 300 μm, and length is 20mm;
S20. lower cover 32 and profiled sheeting 31 are assembled, weigh 17.7632g metallic fiber, with tweezers, weighed metallic fiber is evenly inserted the die cavity 35 of mould, install the rear fastening screw 37 of cover plate 32, make the Forming press 36 in insert molding through hole 34 extrude metallic fiber in die cavity, obtain the inner material body 1 with the hole be extensively communicated with;
S30. unclamp screw rod 37, open the upper cover plate 32 of mould, adopt the upper surface of material body 1 in laser scanning die cavity 35, continue 2 minutes, form with the upper surface sintering in material body 1 the surface mesh overlay film 2 pinning interior metal fiber;
S40. after the upper surface of material body 1 has scanned, mould is inverted and comes, open the lower cover 33 of mould, adopt the lower surface of material body 1 in laser scanning die cavity 35, continue 2 minutes, form with the lower surface sintering in material body 1 the surface mesh overlay film 2 pinning interior metal fiber.
Rapid laser-shaping technique is applied in the manufacture craft of metal fiber polyporous material by the present invention, from material manufacture view, the metal fiber polyporous material with surface mesh structure of film of this fabrication techniques specific pore rate is out utilized to have the features such as residual stress is little, shaping efficiency is high, easy and simple to handle.From the viewpoint of material property, the surface mesh overlay film of surface compact is wrapped in the metal fiber polyporous material of inner tight, both has the structural property of porous, also has certain intensity and toughness, meets specific mechanical property requirements.From the function aspects as attractive material, surface mesh structure of film had both played the effect of parcel interior metal fiber, thin plate resonance sound-absorbing can be produced again and the metallic fiber that inside has an extensive interconnected pore has helmholtz resonance together with surface coating structure absorbs sound principle, thus greatly strengthen the sound-absorbing effect of material.
Certainly, the invention is not limited to above-mentioned embodiment, those of ordinary skill in the art also can make equivalent variations or replacement under the prerequisite without prejudice to spirit of the present invention, and these equivalent modification or replacement are all included in the application's claim limited range.
Claims (8)
1. have the metal fiber polyporous material of surface mesh sintering structure of film, it is characterized in that: comprise material body, described material body inside has the hole be extensively communicated with, and the surface of material body forms surface mesh overlay film by laser scanning.
2. the metal fiber polyporous material with surface mesh sintering structure of film according to claim 1, is characterized in that: described material body is extruded by mould after adopting metallic fiber to load the die cavity of mould.
3. the metal fiber polyporous material with surface mesh sintering structure of film according to claim 2, it is characterized in that: described mould comprises profiled sheeting, the retention mechanism that is positioned at the upper cover plate of described profiled sheeting both sides and lower cover and described upper cover plate and lower cover can be clamped to profiled sheeting, described profiled sheeting is provided with forming through hole, form described die cavity between the inherent described upper cover plate of described forming through hole and lower cover, described upper cover plate and/or lower cover are provided with the Forming press that can embed in described forming through hole.
4. the metal fiber polyporous material with surface mesh sintering structure of film according to claim 3, it is characterized in that: described retention mechanism comprise some be distributed in forming through hole surrounding and nut is equipped with successively through the screw rod of upper cover plate, profiled sheeting and lower cover, each described screw rod in the outside of lower cover.
5. the metal fiber polyporous material with surface mesh sintering structure of film according to any one of claim 2 ~ 4, it is characterized in that: the diameter of described metallic fiber is 100 ~ 300 μm, the porosity of described material body is 0.6 ~ 0.98.
6. the manufacture method with the metal fiber polyporous material of surface mesh sintering structure of film according to claim 4, is characterized in that comprising the following steps:
S10. metallic fiber is made;
S20. metallic fiber is inserted the die cavity of mould, fastening screw, make the metallic fiber in the Forming press extruding die cavity in insert molding through hole, obtain the inner material body with the hole be extensively communicated with;
S30. unclamp screw rod, open the upper cover plate of mould, adopt the upper surface of material body in laser scanning die cavity, form with the upper surface sintering in material body the surface mesh overlay film pinning interior metal fiber;
S40. after the upper surface of material body has scanned, mould is inverted and comes, open the lower cover of mould, adopt the lower surface of material body in laser scanning die cavity, form with the lower surface sintering in material body the surface mesh overlay film pinning interior metal fiber.
7. the manufacture method with the metal fiber polyporous material of surface mesh sintering structure of film according to claim 6, it is characterized in that: in step S10, metallic fiber is obtained by turning by stainless steel bars, and the diameter of metallic fiber is 100 ~ 300 μm.
8. the manufacture method of metal fiber polyporous material with surface mesh sintering structure of film according to claim 6, is characterized in that: the upper surface of material body and lower surface duration scanning are 1 ~ 3 minute.
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| CN201510492780.0A CN105057676B (en) | 2015-08-12 | 2015-08-12 | Metal fiber porous material with surface reticular sintering film structure and manufacturing method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113909498A (en) * | 2021-10-12 | 2022-01-11 | 南方科技大学 | Porous material and preparation method and application thereof |
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| JPS63103299A (en) * | 1986-10-20 | 1988-05-07 | 日本碍子株式会社 | Metal sound absorbing material |
| JPH04168496A (en) * | 1990-10-31 | 1992-06-16 | Yanmar Diesel Engine Co Ltd | Sound absorbing material |
| JPH11161279A (en) * | 1997-11-26 | 1999-06-18 | Unix:Kk | Porous aluminum sound absorbing board, manufacture thereof, and sound absorbing material |
| CN2540009Y (en) * | 2002-04-22 | 2003-03-12 | 陈正芳 | Metal fiber acoustic board |
| JP2003105407A (en) * | 2001-10-01 | 2003-04-09 | Nissan Motor Co Ltd | Porous energy-absorbing member, and member for car body frame |
| CN1463838A (en) * | 2002-06-10 | 2003-12-31 | 孙愈敏 | Aluminum fiber acoustic board and its making process |
| JP2005031463A (en) * | 2003-07-07 | 2005-02-03 | Watanabe Shoji:Kk | Sound insulating material |
| JP2006153926A (en) * | 2004-11-25 | 2006-06-15 | Bridgestone Kbg Co Ltd | Compound sound absorbing structure body |
| CN103264162A (en) * | 2013-05-13 | 2013-08-28 | 华南理工大学 | Copper fiber sintered felt in micro-channel gradient hole structure and manufacture method for felt |
| CN104259460A (en) * | 2014-09-23 | 2015-01-07 | 华南理工大学 | Gradient pore structure metal fiber sintered plate and production method |
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2015
- 2015-08-12 CN CN201510492780.0A patent/CN105057676B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63103299A (en) * | 1986-10-20 | 1988-05-07 | 日本碍子株式会社 | Metal sound absorbing material |
| JPH04168496A (en) * | 1990-10-31 | 1992-06-16 | Yanmar Diesel Engine Co Ltd | Sound absorbing material |
| JPH11161279A (en) * | 1997-11-26 | 1999-06-18 | Unix:Kk | Porous aluminum sound absorbing board, manufacture thereof, and sound absorbing material |
| JP2003105407A (en) * | 2001-10-01 | 2003-04-09 | Nissan Motor Co Ltd | Porous energy-absorbing member, and member for car body frame |
| CN2540009Y (en) * | 2002-04-22 | 2003-03-12 | 陈正芳 | Metal fiber acoustic board |
| CN1463838A (en) * | 2002-06-10 | 2003-12-31 | 孙愈敏 | Aluminum fiber acoustic board and its making process |
| JP2005031463A (en) * | 2003-07-07 | 2005-02-03 | Watanabe Shoji:Kk | Sound insulating material |
| JP2006153926A (en) * | 2004-11-25 | 2006-06-15 | Bridgestone Kbg Co Ltd | Compound sound absorbing structure body |
| CN103264162A (en) * | 2013-05-13 | 2013-08-28 | 华南理工大学 | Copper fiber sintered felt in micro-channel gradient hole structure and manufacture method for felt |
| CN104259460A (en) * | 2014-09-23 | 2015-01-07 | 华南理工大学 | Gradient pore structure metal fiber sintered plate and production method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113909498A (en) * | 2021-10-12 | 2022-01-11 | 南方科技大学 | Porous material and preparation method and application thereof |
| CN113909498B (en) * | 2021-10-12 | 2023-09-01 | 南方科技大学 | Porous material and preparation method and application thereof |
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| CN105057676B (en) | 2017-05-17 |
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